Superconducting Circuits Hit World's First 3.8M Junction Density

Superconducting circuits hit world's first 3.8M junction density

A new superconducting circuit from imec reaches record density, while its 30nm NbTiN wiring targets more scalable computing systems.

Imec advances scalable superconducting technology with world-first NbTiN circuits and 30nm interconnects

• At the 2026 Applied Superconductivity Conference, imec demonstrates two world-firsts: (1) a three-metal-level (3ML) niobium-titanium-nitride (NbTiN)-based Josephson junction circuit, achieving circuit design densities of 3.8 million junctions per cm2; and (2) 3ML NbTiN routing with superconducting wires scaled down to an unprecedented 30nm linewidth for superconducting digital (SCD) applications. • The achievements extend imec’s … Read More → …

Imec debuts world-first NbTiN circuits and 30nm interconnects for scalable superconducting technology

Imec presented a three-metal-level (3ML) niobium-titanium-nitride (NbTiN)-based Josephson junction circuit at the 2026 Applied Superconductivity Conference (ASC).

Imec scales NbTiN superconducting circuits to 30nm

Imec has demonstrated a three-metal-level superconducting circuit based on niobium-titanium-nitride (NbTiN), reaching a design density of 3.8 million Josephson junctions per cm². The Belgian R&D center has also scaled superconducting NbTiN interconnects to a 30nm linewidth, which it says is a world first. The developments are aimed at making superconducting electronics more scalable for high-performance […] The post Imec scales NbTiN superconduc…